Book/Report

FZJ-2016-03685

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png NAKOGAS -1, Institut für Nukleare Sicherheitsforschung ein Rechenprogramm zur Berechnung instationärer Temperatur undStrömungsfelder in Kugelhaufen-Reaktoren bei Ausfall der Zwangskühlung

Badur, A.FZJ* ; Finken, R.FZJ* ; Höfer, I. ; Klumpp, W. ; Meister, G.FZJ* ; Rehm, W.FZJ*

1978
Kernforschungsanlage Jülich, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/11754

Report No.: Juel-1528

Abstract: This report presents the computer code NAKOGAS-1 which has been developed for the evaluation of the thermodynamic behaviour of pebble bed reactors in the case of failure of forced cooling. It is preferently designed for evaluation of flow- and temperature fields which may asise under natural convection conditions but it is also suited for natural convection with superimposed forced convection. The code models the reactor core and the surrounding structure two-dimensional in cylindrical geometry. In addition those components of the primary circuit which may influence the gas convection are included. The pebble bed is modelled as a quasi homogenous 2-phase medium with energetic coupling between both phases. Energy transfer by conduction, convection and radiation is taken into account.The presented report contains a description of the mathematical model underlying the programme and of the numerical method being used. The code structure is described and results of a typical sample case are illustrated.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000 ; Retrocat)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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Database coverage:

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